Loading and lifting hydraulic system of semitrailer

A hydraulic system and semi-trailer technology, applied in the direction of fluid pressure actuators, servo motors, servo motor components, etc., can solve the problems of heavy workload, low efficiency, increased fuel consumption, etc., achieve good road passability, improve customer Efficiency and the effect of prolonging the service life

Active Publication Date: 2016-11-30
HUBEI SANJIANG SPACE WANSHAN SPECIAL VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The radial load of the rear axle of the tractor is determined by the center of gravity of the vehicle and the ground support point of the trailer. Therefore, in order to transport goods with a rearward center of gravity, it is necessary to lengthen the trailer or add additional counterweight to the gooseneck to meet the radial load of the tractor rear axle. Load requirements, this

Method used

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  • Loading and lifting hydraulic system of semitrailer
  • Loading and lifting hydraulic system of semitrailer
  • Loading and lifting hydraulic system of semitrailer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Embodiment 1: as Figure 1-4 As shown, the present invention provides a loading and lifting hydraulic system for a semi-trailer, including: a gooseneck hydraulic system 1, a power source hydraulic system 2 and a trailer hydraulic system 3; the power source hydraulic system 2 is connected to the gooseneck hydraulic system 1 for Provide the hydraulic oil required for the work of the gooseneck hydraulic system 1; the gooseneck hydraulic system 1 includes the first double-acting multi-stage cylinder 6, the second double-acting multi-stage cylinder 7, the multi-way valve 20, the first double-acting cylinder 4 and the second Two double-acting oil cylinders 42; the multi-way valve 20 is connected with the first double-acting multi-stage oil cylinder 6 and the second double-acting multi-stage oil cylinder 7, and the first double-acting multi-stage oil cylinder 6 and the second double-acting multi-stage oil cylinder 6 are realized by the multi-way valve 20 cooperating with the sw...

Embodiment 2

[0059] Embodiment 2: The semi-trailer using the loading and lifting hydraulic system of the semi-trailer of the present invention mainly has two working modes, the first mode is the adjustment mode, and the second mode is the driving mode. Before the vehicle enters driving mode, the hydraulic system is switched to adjustment mode, so that the gooseneck is connected to the tractor and the fifth wheel is loaded before driving. In the adjustment mode, it also has several other functions, one is the separation of the tractor and the gooseneck, and the other is the suspension lifting of the trailer.

[0060] When power source hydraulic system, gooseneck hydraulic system, trailer hydraulic system press figure 1 After connecting, start the engine and do not operate the multi-way valve at this time. The hydraulic oil pumped out of the hydraulic pump passes through the bridge of the multi-way valve and then directly connects to the T port and returns to the hydraulic oil tank. The whol...

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Abstract

The invention discloses a loading and lifting hydraulic system of a semitrailer. The system comprises a gooseneck hydraulic system, a power source hydraulic system and a trailer hydraulic system. The power source hydraulic system is connected with the gooseneck hydraulic system and used for providing hydraulic oil needed by work of the gooseneck hydraulic system. A multi-way valve in the gooseneck hydraulic system is connected with a first dual-effect multi-stage oil cylinder and a second dual-effect multi-stage oil cylinder, and separation of a gooseneck from a tractor is achieved through the cooperation of the multi-way valve and a switch ball valve. The multi-way valve is connected with the first dual-effect oil cylinder and the second dual-effect oil cylinder. pitching operation of the gooseneck is achieved through the cooperation of the multi-way valve and the switch ball valve. The trailer hydraulic system is connected with the gooseneck hydraulic system. Multiple single-effect oil cylinders in the trailer hydraulic system are made communicated and matched with the switch ball valve to achieve switching between semitrailer three-point bearing and four-point bearing. The first dual-effect oil cylinder and the second dual-effect oil cylinder are connected with the single-effect oil cylinder in the front of trailer suspension, and different loading modes are selected according to the load and road surface working conditions to achieve fifth round of gooseneck loading.

Description

technical field [0001] The invention relates to the technical field of hydraulic transmission, in particular to a loading and lifting hydraulic system for a semi-trailer. Background technique [0002] The gooseneck of an ordinary semi-trailer is separated from the tractor by hand-cranking the mechanical outriggers with the gooseneck belt. After the outriggers touch the ground, the gooseneck is separated from the tractor. This operation takes a long time and is inefficient. [0003] The suspension of ordinary semi-trailers generally adopts leaf springs, which cannot be lifted independently. The road surface cannot be adjusted through the minimum height, and the road compensation ability is weak. The suspension is prone to overload on rough roads. At the same time, ordinary trailers use leaf spring suspensions. , the bearing center of gravity is fixed, and it cannot adapt to the transportation of goods with different centers of gravity. Customers need to purchase trailers of d...

Claims

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Application Information

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IPC IPC(8): F15B11/16F15B13/06
CPCF15B11/16F15B13/06
Inventor 万俊王力波王志国周华蓉曹军
Owner HUBEI SANJIANG SPACE WANSHAN SPECIAL VEHICLE
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